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view src/ploki/random.c @ 6934:04f9cc15cad5
<hppavilion[1]> le/rn last-class function/A last-class function is a function that cannot be passed as an argument, accept a function as an argument, be returned by a function, return a function, set to a variable other than its initial name, or be called
author | HackBot |
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date | Tue, 23 Feb 2016 00:02:33 +0000 |
parents | ac0403686959 |
children |
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#include "config.h" #include "random.h" #include <stdio.h> #include <stdlib.h> #include <time.h> void randseed(void) { unsigned seed; seed = time(NULL); #if HAVE_DEV_URANDOM_P { FILE *fp; if ((fp = fopen("/dev/urandom", "rb"))) { fread(&seed, sizeof seed, 1, fp); fclose(fp); } } #endif srand(seed); } double randval(void) { return rand() / (RAND_MAX + 1.0); }